It is an interactive math program, which draws the noteworthy points, lines, and circles associated with a triangle (eg.: incircle, orthocenter, etc.). I wrote this program at the age of 15 in 2003, which won a prize in the same year at <19 competition. Please note that the software's language is Hungarian, but easy to use.

...and the best thing is:

this software is free to use

open source

take a look at a screenshot:

download

software name

Simson program 1.1

size

1.6 MiB

description

interactive math software

note

The downloadable simson.zip file is a compressed package, which also contains the source codes.